Skip to main content

Advertisement

Table 3 The changes in the pharyngeal airway passage (PAP) dimensions among treatment and control group subjects

From: Effects of twin-block appliance on the anatomy of pharyngeal airway passage (PAP) in class II malocclusion subjects

Variables Groups Comparison of mean difference among treatment and control groups (P-value)
Treatment Group Control Group
Pre-treatment (T0) 6-months Post-treatment (T1) Significance (P-value) Pre-follow-up (T0) 6-months Post-follow-up (T1) Significance (P-value)
Mean ± SD Mean ± SD Mean ± SD Mean ± SD
DNP (mm) (Ptm-UPW) 12.84 ± 5.77 13.76 ± 5.17 0.254NS 12.01 ± 5.78 13.04 ± 5.15 0.065NS 0.911NS
HNP (mm) (PNS to Ba-N plane) 21.76 ± 1.78 21.93 ± 2.22 0.471NS 21.25 ± 1.85 21.78 ± 2.20 0.034* 0.258NS
DOP (mm) (U-MPW) 9.19 ± 2.03 10.73 ± 2.45 0.000*** 7.81 ± 2.13 8.70 ± 1.80 0.010* 0.013*
DHP (mm) (V-LPW) 12.53 ± 2.80 14.30 ± 2.99 0.005** 12.84 ± 2.12 13.21 ± 2.15 0.516NS 0.081NS
SPL (mm) (U-PNS) 30.56 ± 3.41 30.01 ± 3.25 0.136NS 30.78 ± 2.85 30.88 ± 3.25 0.740NS 0.365NS
SPT (mm) (Maximum thickness of the soft palate) 7.24 ± 1.15 7.48 ± 1.02 0.135NS 7.11 ± 0.76 7.09 ± 0.96 0.845NS 0.287NS
SPI (°) (Ptm per × PNS-U) 46.75 ± 4.72 44.22 ± 3.90 0.019* 42.35 ± 5.40 44.30 ± 4.82 0.068NS 0.045*
  1. SD indicates standard deviation; NS, nonsignificant; *P < .05; **P < .01; ***P < 0.001.
  2. DNP, depth of the nasopharynx; HNP, height of the nasopharynx; DOP, depth of the oropharynx; DHP, depth of the hypopharynx; SPL, soft palate length; SPT, soft palate thickness; and SPI, soft palate inclination.